The above will send a multipart email with an attachment, properly nested with the top level being <tt>multipart/mixed</tt> and the first part being a <tt>multipart/alternative</tt> containing the plain text and HTML email messages.

+h5. Sending Emails with Dynamic Delivery Options

+

+At times you may wish to override the default delivery options (e.g. smtp credentials) while delivering emails. This can be achieved using +delivey_method_options+ in the mailer action.

+

+<ruby>

+class UserMailer < ActionMailer::Base

+ def welcome_email(user,company)

+ @user = user

+ @url = user_url(@user)

+ mail(:to => user.email,

+ :subject => "Please see the Terms and Conditions attached",

+ :delivery_method_options => {:user_name => company.smtp_user,

+ :password => company.smtp_password,

+ :address => company.smtp_host})

+ end

+end

+</ruby>

+

h3. Receiving Emails

Receiving and parsing emails with Action Mailer can be a rather complex endeavor. Before your email reaches your Rails app, you would have had to configure your system to somehow forward emails to your app, which needs to be listening for that. So, to receive emails in your Rails app you'll need to: